NB8-125 Series Moulded Case Circuit Breaker Datasheet & Manual

NB8-125 Series Moulded Case Circuit Breaker

The NB8-125 Series Moulded Case Circuit Breaker (MCCB) provides robust protection against overload, short-circuit, and electrical isolation for power distribution lines up to 125A. NB8-125 MCCB offers a high 10kA breaking capacity, ensuring reliable fault interruption in demanding environments. Ideal for enhancing safety and continuity of service, it is a versatile solution for commercial office buildings, residential facilities, and general industrial applications.

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FAQs

What applications is the NB8-125 MCCB suitable for?

It’s designed for low-voltage distribution systems in commercial buildings, residential facilities, and general industries, providing reliable overload and short-circuit protection up to 125A.

What are the main tripping curves available?

The NB8-125 offers C and D curves:

Curve C: For resistive and mixed loads (motors, lighting).

Curve D: For highly inductive loads or motors with high inrush current.

What environments can the NB8-125 operate in?

It operates safely between −35°C and +70°C, at altitudes up to 2000 meters, and withstands humidity up to 95%, ensuring performance even in harsh conditions.

Is the NB8-125 compatible with accessories?

Yes, it supports multiple CHINT accessories, including S9, V9, XF9, XF9J signal and auxiliary contacts, and OVT-1/OUVT-1 voltage releases, for enhanced control and monitoring.

How long is the operational lifespan?

The NB8-125 offers 20,000 mechanical and 10,000 electrical operations, ensuring long-term durability with minimal maintenance needs.

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NB8-125 Series Moulded Case Circuit Breaker

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NB8-125 Series Moulded Case Circuit Breaker

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